They have  carried out the plan successfully.

    变否定句        They haven't  carried out the plan successfully .     

    对成功提问     How have they carried out the plan?



2.That gentlemen can speak three languages fluently. 
    变否定句         That gentlemen can't speak three languages fluently.
    对三种语言提问  How many languages can that gentleman speak  fluently?



3.Jim cannot dress himself      
   变否定       (已经是否定了)  肯定则是：Jim can dress himself.
   对Jim提问(这里我不是太懂你的意思)       Can Jim dress himmself?
                                                                   Who cannot dress himself?


4.All of us believe that Jack is an honest boy .
   变否定句   None of us believe that Jack is an honest boy.
   对Jack是一个诚实的男孩提问  Is Jack an honest boy?


5.My brothers are all college students. 
   变否定句    None of my brothers are college students.
   对我的提问（这里我也不太明白） Whose brothers are all college students?
                                                         Are you a college student?
   
6.This book is about the history of the United States of America . 
    变否定句  This book is not about the history of the United States of America.


7.Mr Johnson taught us Germany last yesr.  
    变否定句  Mr.Johnson didn't teach us Germany last year.
    对去年提问  When did Mr.Jhonson teach your Germany?


8.Grandma told me an interesting story last night.
   变否定句    Grandma didn't tell me an interesting story last night.
   对有趣的故事提问 What did your grandama tell you last night?
  
9.My father has bought me a new bike.  
    变否定句    My father hasn't bought me a new bike.
    对我父亲提问   Who has bought you a new bike?